Although this year’s No. 1 ranking makes for an interesting conversation piece, it has little practical effect. As anyone driving around Los Angeles can see, lawns are still green, swimming pools are full. Southland water officials aren’t sounding the alarm bells.

It has been a century since Angelenos relied primarily on local sources for their water. The city is mostly sustained by imports from other parts of California and the Colorado River. And though it has been dry all over, regional water managers say they have ample supplies in reserve.